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  <h1>1级别标题</h1>
  <h2>2级别标题</h2>
  <h3>3级别标题</h3>
  <h4>4级别标题</h4>
  <h5>5级别标题</h5>
  <h6>6级别标题</h6>

<hr size="5" color="red" />

  <p>1111111111</p>
  <p>11111111<br /></p>
  <p><a href="https://baidu.com/">超链接</a></p>
  <p><a href="https://baidu.com" target=""_blank>超链接</a></p>
  <p><a href="table.html">超链接</a></p>
  <p><a href="/note/html/demo/table.html"download>超链接</a></p>
  <p><a href="#top">超链接</a></p>
  <hr size="5" color="bule" />
  <img src="./img/狗狗.jpg" alt="替换文字" title="文字提示" width="200">
  
</body><ul>
    <li>csnsvnj</li>
    <li>第1项dbdgb</li>
    <li>第3项bd</li>
    <li>第4项bdd</li>
    <li>第5项db</li>
    
</ul>
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